各位学长学姐,本人大一,在学曼昆的经济学原理,在书中遇到一点问题想请教一下:储蓄和投资是什么关系?原文是这样的:With the nation saving more ,fewer resources are needed to make consumption goods ,and more resources are available to make capital goods,As a result ,the capital stock increase ,leading to rising productivity and more rapid growth in GDP.这是什么意思呢?希望能指点迷津,谢谢!